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Warm Up (Just give the fraction.) 3. Find the measure of ∠T: ________ 4. Solve for the length of AC. 32o 17 Def. Trigonometry is the study of the relationships between the angles and sides of a right triangle. Def. A comparison of the lengths of two sides of a right triangle is called a trigonometric ratio. The three most common ratios of trigonometry are sine, cosine, and tangent. Write this on pg. 698 In a right triangle, the trig ratios can be found by remembering SOH opp si n A hyp CAH adj cos A hyp TOA opp tan A adj pg. 698 SOH – CAH - TOA pg. 698 Put these on a separate piece of paper Solve for the variable in each problem: SOH – CAH - TOA SOH – CAH - TOA 12 cm 36° SOH – CAH - TOA x Find x or y. 1) cos 36 y 8 2) y 6.47 3) tan 64 10x y 4.9 tan 50 x 5.96 x 5 SOH – CAH - TOA pg. 700 SOH – CAH - TOA pg. 701 pg. 701 SOH – CAH - TOA pg. 702 SOH – CAH - TOA Do this on your separate sheet of paper Ex. Find x. 2 x 17